Improvement in wrenches



' em-a gaat DANIEL GAMPBELEAND WILLIAM BAUL; or ELIZABETH, `NEW JERSEY.

f Letters Patent No. 107,871, dated'Ootober 4, 1,870.

` IMPROVEMENT l'N wRENcHEs.

`'.l'he, Schedule referred to in these Letters Patent and making of the name.

vWe,l)1\f`IEL CAMPBELL and WLLLIAM SAUL, both of Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in lVrenchps, of which the following is a specification.

. I e i l Natie-canti Object of the Invention. Uur invention relates to adjustable wrenches, and

` consists in a novcL construction and `arrangement of parts, which have for their-object the productionlof a light, strong, and durable tool, as willj be fully set forth hereafter. l

Description lof the Drawing. Figure 1 is a perspective viewof our invent-ion, partly in section.

`Figure 2 isa vertical `section through the center of the handle.

Figurc is a sectional view' through the line a; rv, iig. 1. i

iig. 2.

i lfhe stem andheadA cot" this wrench are c ast with,` a chamber, C, extending nearly the length of. the stemI `above the'handle, of such size that,while it can be T nsed as a receptacle to ahold oil, lead,` or other vsubstances, the qpantity ofjrmetal' in the parts will not be so much reduced that the strength of the wrench is eected. 'i Y 'lhe opening in the head a., communicating with i the chamber is providedwth a screw-stopper, I.

The front edge ofthe' stem 'is extended, to forniv the wedge-shapedribfb', whioh runs the length of the' i stem; excepting where a space is left near the lhandle `for the screw-head D.

4 The endof the rib atfthisp'oint forms a shoulder to hold the screw-head in its place, and prevent the end.

of the shaft l from Vbeing thrown outof its socket, e, figQ 2.

` This constructionI ofthe stem 'permits thesize of 4the shoulder to be` enlarged, without increasingthe Figure 4 is a sectional view through the line y y,

size of the stem, or `cutting into it so far, for the reception f the screwhead,as to weaken it.

lhe socket piece E,'which holdsthe'end ofthe screw-,shaft d, is held up by the washer f, as plainly 'shown irl-fig. 2, and the wash r f is retained in place by being turned around, so that the square portion of j the shankGcomes 4crosswise of the slot in the washer. as illustrated in tig. 4.

'lhe ferrule F surrounds the end ofthe wooden `handle H and the washer j, and fits into a circular depression inthe socket E. 4

The ferrnle and socket ,are formed in two separate parts,L as shown, for the purpose of facilitating the adj justment of the washer f in place, as well, asv of les sening the', cost of manufacture of the wrench. l Y The woodenfhandle His held in place uponjthe rod, (a continuation of the'shauk G,)'by the nut h. v

In the construction of the handle of this wrench,4 the parts are so arranged that the direct strainV upon the wood portion and the screw-uuth is, to a great degree, removed and thrown upon the stem A and shank G, and the tendency ofthe wood H to become sp1it,'and its upper end to be torn frorn'beneath :the

fel-rule, is greatly diminished, it' not entirely prevented. Claims.

l'Ve claimp l. As an improvement in adjustable wrenches,

making the body of the wrench hollow, thereby 1e t .ducipg the weight, and providing a receptacle for oil,V

lead, 85o., substantially as herein described.

2. The arrangement and combination of the ferrule F, for the handle, and the socket E, for the screw, in two parts, substantially as Vandfor the purpose de scribed and specified.

3. The combination andl arrangement of the stem LA, Aprovided with rib b, jaw B, screw d, socket E, fer

"rule F; and 4Washerf, -iitting the groove in the shank g, substantially as described and specified. A

DANIEL CAMPBELL.

Witnesses: WILLIAM SAUL.

PATRICK DoEKY, 'JAMEs M. HADDEN. 

